9966677807 has 2 divisors, whose sum is σ = 9966677808. Its totient is φ = 9966677806.

The previous prime is 9966677803. The next prime is 9966677813. The reversal of 9966677807 is 7087766699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9966677807 - 2² = 9966677803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9966677803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983338903 + 4983338904.

It is an arithmetic number, because the mean of its divisors is an integer number (4983338904).

Almost surely, 2^9966677807 is an apocalyptic number.

9966677807 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966677807 is an equidigital number, since it uses as much as digits as its factorization.

9966677807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48009024, while the sum is 65.

The square root of 9966677807 is about 99833.2500071995. The cubic root of 9966677807 is about 2152.0390107971.

The spelling of 9966677807 in words is "nine billion, nine hundred sixty-six million, six hundred seventy-seven thousand, eight hundred seven".